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Updated: Aug 1, 2026
07:56
Modified Yeast-Two-Hybrid System to Identify Proteins Interacting with the Growth Factor Progranulin
Published on: January 17, 2012
PC cell-derived growth factor (granulin precursor) expression and action in human multiple myeloma
Wengang Wang1, Jun Hayashi, Wes E Kim
1Department of Pharmaceutical Sciences, School of Pharmacy, University of Maryland, Baltimore, Maryland 21201, USA.
Summary
PC cell-derived growth factor (PCDGF) promotes multiple myeloma (MM) cell growth and survival. PCDGF is expressed in MM cells and may serve as a potential biomarker for this B-cell neoplasm.
Area of Science:
- Hematology
- Oncology
- Molecular Biology
Background:
- Multiple myeloma (MM) is a malignant proliferation of plasma cells.
- PC cell-derived growth factor (PCDGF) is a growth factor implicated in cell proliferation.
- Understanding MM pathogenesis requires investigating novel growth factors and their roles.
Purpose of the Study:
- To investigate the expression, function, and signaling pathways of PCDGF in human multiple myeloma.
- To determine if PCDGF acts as an autocrine growth factor in MM.
- To evaluate PCDGF as a potential biomarker for MM.
Main Methods:
- PCDGF expression was analyzed in MM cell lines (ARP-1, RPMI 8226) and patient bone marrow samples using mRNA, protein, and immunohistochemical techniques.
- Functional studies involved exogenous PCDGF stimulation and neutralizing antibody treatment to assess effects on cell growth and survival.
- Signal transduction pathways (MAPK, PI3K, JAK/STAT) were investigated in response to PCDGF.
Main Results:
- PCDGF mRNA and protein were detected in MM cell lines and patient samples.
- Exogenous PCDGF enhanced MM cell growth and survival, while anti-PCDGF antibodies inhibited growth, indicating an autocrine role.
- PCDGF activated the MAPK and PI3K pathways but not the JAK/STAT pathway.
- PCDGF expression correlated with myeloma cells in MM patient bone marrow.
Conclusions:
- PCDGF functions as an autocrine growth factor, promoting the proliferation and survival of human multiple myeloma cells.
- PCDGF is expressed in MM cells and shows potential as a diagnostic or prognostic biomarker.
- Targeting PCDGF may represent a novel therapeutic strategy for multiple myeloma.
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